Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Wednesday, 27 December 2023

‹ 26.12.2023 2023 28.12.2023 ›

Photosphere sunspot drawing and RDS evaluation

27.12.2023 photosphere drawing

High-resolution scan (3231 px)

Time
08:30 UT
Observer
Süleyman FİŞEK
g
7
f
34
R
104
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · HR_ – 1Group 1 · HR_ – 1 Group 2 · AX_ – 2Group 2 · AX_ – 2 Group 3 · CAI – 12Group 3 · CAI – 12 Group 4 · BXI – 6Group 4 · BXI – 6 Group 5 · EHO – 5Group 5 · EHO – 5 Group 6 · CHI – 3Group 6 · CHI – 3 Group 7 · CRI – 5Group 7 · CRI – 5
RDS data file (.gzd) 
[Gözlem]
Tarih=27.12.2023
Saat=08:30
Gözlemci=Süleyman FİŞEK
KontrolEden=Burçin TANIK
Durumaçısı=4.55
Enlemaçısı=-2.38
Boylamaçısı=288.62
Boylamfark=2
GKalite=3
GDurum=K.T
Kuzeyaçısı=-0.4
Sırano=19892
AyRasatNo=15
RasatÖnceki=26.12.2023
RasatSonraki=28.12.2023

[Leke Grupları]
Grupsayısı=7:4:3
LekeSayısı=34:21:13
RölatifSayı=104:61:43
01=HR_ 01 +11.261 +80.461 009.810 +0.000 0000 0 +11.689 +81.672 +10.833 +79.251 +11.261 +81.172 +11.261 +79.750
02=AX_ 02 +13.860 +50.286 338.906 +0.000 0000 0 +14.980 +50.804 +13.623 +49.768 +13.860 +50.304 +13.860 +50.268
03=CAI 12 +06.773 +37.649 326.269 15.484 0000 0 +08.608 +41.388 +04.938 +33.909 +06.359 +39.800 +07.574 +34.619
04=BXI 06 +14.851 +13.602 302.222 13.309 0000 0 +17.100 +17.885 +12.603 +09.319 +14.177 +17.279 +15.836 +10.244
05=EHO 05 -20.604 +55.327 343.947 11.139 0000 0 -18.208 +62.819 -23.000 +47.835 -19.651 +60.918 -21.981 +48.988
06=CHI 03 -22.918 +15.550 303.675 +0.000 0000 0 -18.601 +18.598 -27.234 +11.512 -22.918 +18.398 -22.918 +11.712
07=CRI 05 -12.712 -68.735 219.885 +0.000 0000 0 -12.700 -65.158 -13.353 -72.311 -12.712 -65.659 -12.712 -71.812
20231227.gzd

Chromosphere (H-α) FITS frames

H-α

The images are made automatically with a fixed, gentle rule: uneven illumination and most of the limb darkening are removed, and the brightness is shown on a linear scale (no sharpening); prominences get their own scale outside the limb. Frames are ordered by sharpness (seeing); frames without the Sun (darks, bias) come last. Method →

2023/20231227_sf · SF · 6 frames · 128.6 MB · 08:41:56–08:59:29 UT

08:57:47 UT · 40 ms 08:41:56 UT · 30 ms 08:56:27 UT · 40 ms 08:45:12 UT · 60 ms · over-exposed 08:59:29 UT · 70 ms · over-exposed 08:55:07 UT · 70 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.